Legend of electrical function schematic for On Board Diagnosis (OBD) - PE07.16-P-2770-60MAB
Model 164.1 with ENGINE 642.8 with CODE (U42) BLUETEC diesel exhaust gas cleaning (SCR) with AdBlue/DEF with CODE (494) USA version as of model year. 09/AEJ 08 model refinement package
Model 164.8 with ENGINE 642.8 with CODE (U42) BLUETEC diesel exhaust gas cleaning (SCR) with AdBlue/DEF with CODE (494) USA version as of model year. 09/AEJ 08
| Code | Designation | Coordinates |
|---|---|---|
| A1 | Instrument cluster | 9J |
| A1e26 | "CHECK ENGINE" MIL | 12J |
| A103/2 | AdBlue® delivery module | 9B |
| B16/14 | Exhaust gas recirculation temperature sensor | 6K |
| B96/1 | Left intake port shutoff end position sensor | 4J |
| B96/2 | Right intake port shutoff end position sensor | 4J |
| N3/9 | CDI control unit | 7E |
| N37/7 | NOx control unit downstream of diesel particulate filter | 1E |
| N37/7b1 | NOx sensor downstream of diesel particulate filter | 1C |
| N37/8 | NOx control unit downstream of SCR catalytic converter | 1H |
| N37/8b1 | NOx sensor downstream of SCR catalytic converter | 1K |
| N93 | Central gateway control unit | 9D |
| N118/5 | AdBlue® control unit | 6B |
| X11/4 | Data link connector | 14D |
| CAN C | Engine compartment CAN | 9F |
| CAN-D | Diagnostic CAN | 11D |
| CAN I | Drive train sensor CAN | 3F |
| CAN I | Drive train sensor CAN | 6C |
| 1 | CHECK ENGINE indicator lamp, actuation | 10H |
| 1 | CHECK ENGINE indicator lamp, actuation | 11J |
| 2 | Engine control diagnosis, communication | 10F |
| 2 | Engine control diagnosis, communication | 11D |
| 3 | AdBlue® system diagnosis, communication | 7C |
| 4 | Exhaust gas recirculation temperature sensor, signal | 7H |
| 5 | Condensation sensor for fuel filter with heating element, signal | 5H |
| 6 | NOx sensor, signal | 2E |
| 6 | NOx sensor, signal | 2H |
| 6 | NOx sensor, signal | 5F |